Family SYLVIIDAE. 

 Phylloscopus collybita (Vieillot). — Chiffchaff. 



(Plate 57, fig. a-c). 

 (Snouckaert: Avifauna Neerlandica, p. 37, No. 84). 



Colour of surface of shell: 

 Colour of spots: 

 Average dimensions: 

 Average weight of shell: 

 Texture of shell: 

 Shape: 

 Nest: 



Site of nest: 



Number of eggs: 

 Breeding season: 

 Duration of incubation: 



pure white. 



brownish red; purple brown. 



15.45 X 12.1 millimetres. 



0.05 gram. 



not specially characterized. 



ovoidal; sometimes short-compressed. 



consists of vegetable materials, lined with 

 hair and feathers. (It is domed, with a 

 hole in the side in upward direction). 



slightly above the ground in small shrubs, 

 in the midst of dense vegetation; also 

 higher from the ground, especially in thujas 

 and cypresses. 



6-7 (after-set: 5-6). 



May-July. 



about 13 days. 



